The beer around here recently turned green, as it does every year in the middle of March for some inexplicable reason. The thirsty encourage it by wearing a bit of green themselves. At the bunker, we decided to take this seriously by painting the whole place green.

Going green may be one of the newer virtues, but we predict it will never catch on where your monitor is concerned. Monitors cry out for a certain kind of balance that's frankly admirable. It makes your photographs look real, too.

The well-balanced monitor does not come out of a box. It takes some adjustment to get it right. Some people flatter themselves that they can do this by eye. And then never do. Others have been reading us for years and believe what we tell them: you need a little gadget to get this reliably right enough to do as frequently as it needs doing. A monitor calibrator.